PCAP_LIST_DATALINKS(3PCAP)PCAP_LIST_DATALINKS(3PCAP)NAMEpcap_list_datalinks - get a list of link-layer header types supported
by a capture device
SYNOPSIS
#include <pcap/pcap.h>
int pcap_list_datalinks(pcap_t *p, int **dlt_buf);
DESCRIPTIONpcap_list_datalinks() is used to get a list of the supported data link
types of the interface associated with the pcap descriptor.
pcap_list_datalinks() allocates an array to hold the list and sets
*dlt_buf. The caller is responsible for freeing the array with
pcap_free_datalinks(3PCAP).
RETURN VALUEpcap_list_datalinks() returns the number of data link types in the
array on success and -1 on failure. If -1 is returned, pcap_geterr()
or pcap_perror() may be called with p as an argument to fetch or dis‐
play the error text.
SEE ALSOpcap(3PCAP), pcap_geterr(3PCAP), pcap_free_datalinks(3PCAP), pcap-link‐
type(5)ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────────────┤
│Availability │ system/library/libpcap │
├────────────────────┼─────────────────────────┤
│Interface Stability │ Uncommitted │
└────────────────────┴─────────────────────────┘
NOTES
Source for libpcap is available at http://opensolaris.org and at
http://www.tcpdump.org. Documentation is available at
file:///usr/share/man, and http://www.tcpdump.org.
5 April 2008 PCAP_LIST_DATALINKS(3PCAP)